Found my assembly manual. According to the book what you'd need would be:
30 min epoxy
thin CA
med CA
#64 rubber bands
utility/modelling knife
drill with 1/16,1/8,3/32 bits
small standard, phillips screwdrivers
masking tape
needle nose pliers
36" ruler/tape measure
flexible straight edge
T-square
30/60/90 6"triangle
soft pencil
T-pins
adjustable wrench
wire cutters
small paint brush(acid brush)
medium grit sandpaper
waxed paper


While this list was taken out of the Eagle's manual, it should be pretty much the same for most ARF trainers...plus or minus one or two items

You'll probably also need a covering iron(to touch up the one or two wrinkles it will have or to patch holes after a day of flying!), assorted hex-wrenches... nice to have would also be a heat gun, Z-bend pliers

I'm sure there are a few things I've forgotten...